All 2st Side panel rear screw inserts (Rivnuts)

What are you guys doing about the rivnuts in the subframe? Buying a $100 tool? I've tried to fix them by putting a nut on screw, then inserting into the rivnut and tightening the nut to expand the rivnut. Worked for awile but it's back to spinning in the frame again. You would think Husky would use a better method or refine the current one. I have the same problem on my 09 WR as my 08 TE.

Sorry if this has been covered before, but I couldn't find it.

Just saw a new rivet nut tool at one of the Home improvement places for $29.95 but was american threads.

Yea, I have a Harbor Freight one is SAE

I got some well nuts from my local Ace hardware. They're less than a buck each and the thick rubber also got rid of the rattle from the side panels. Win-win in my book!

I used the Well Nuts and they worked great.

Have this problem on my 510, it's currently at the dealer so I can't get any measurements. Would an outer diameter of 9mm, and a length of 14 mm be too large? I'm also guessing it's a 5mm thread. Just want to make sure, as my local fastener store doesn't stock any (I should know, I worked there for 4 years, haha) and I will be ordering from Ebay.